/// <summary> /// Implementation of <see cref="Splice(PhpArray,int,int,object)"/> and <see cref="SpliceDc(PhpArray,int,int,object)"/>. /// </summary> /// <remarks>Whether to make a deep-copy of items in the replacement.</remarks> internal static PhpArray SpliceInternal(PhpArray array, int offset, int length, object replacement, bool deepCopy) { Debug.Assert(array != null); int count = array.Count; // converts offset and length to interval [first,last]: PhpMath.AbsolutizeRange(ref offset, ref length, count); PhpArray result = new PhpArray(length); PhpArray r_array = replacement as PhpArray; // replacement is an array: if (r_array != null) { // provides deep copies: IEnumerable<object> e; if (deepCopy) e = PhpVariable.EnumerateDeepCopies<object>(r_array.Values); else e = r_array.Values; // does replacement: array.ReindexAndReplace(offset, length, e, result); } else if (replacement != null) { // replacement is another type // // creates a deep copy: if (deepCopy) replacement = PhpVariable.DeepCopy(replacement); // does replacement: array.ReindexAndReplace(offset, length, new object[] { replacement }, result); } else { // replacement is null: array.ReindexAndReplace(offset, length, null, result); } return result; }